support Android Studio 3.1.x

[wyy931-zz]

修复Android Studio 3.1.x版本 插件不能使用的问题，下载附件，解压，从硬盘安装就可以了

support Android Studio 3.1.x, download the attachment, unzip it and install plugin from disk

freeline-studio-plugin.jar.zip

#972

[CLAassistant]

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[CLAassistant]

Thank you for your submission, we really appreciate it. Like many open source projects, we ask that you sign our Contributor License Agreement before we can accept your contribution.
_{You have signed the CLA already but the status is still pending? Let us recheck it.}

[erhu]

Android Studio 3.1.4 安装不了 freeline-studio-plugin.jar.zip 这个插件。
辛苦抽空适配一下~

[fly7632785]

[MrRoshan]

freeline-studio-plugin.jar.zip
适配了AS 3.2.* 下载解压安装

[fly7632785]

3q

[flycumt]

freeline-studio-plugin.jar.zip
适配了AS 3.2.* 下载解压安装

[liuxuesong001]

@wyy931 不好意思，加载完lib 包，然后如何操作，是和官网推荐的步骤一样嘛？